nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Perform If Idle Is Out of Specification|Page 3661 > < Engine Controls - Engine Idle Speed 25RPM Too High|Page 3658
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Idle Speed: Adjustments
Perform If Idle Is Out of Specification

Idle Air Volume Learning

DESCRIPTION

Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific range. It must be performed under any of
the following conditions:

-

Each time electric throttle control actuator or ECM is replaced.

-

Idle speed or ignition timing is out of specification.

PREPARATION

Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied. Learning will be cancelled if any of the
following conditions are missed for even a moment.

-

Battery voltage: More than 12.9 V (At idle)

-

Engine coolant temperature: 70 - 95 °C (158 - 203 °F)

-

Park/neutral position (PNP) switch: ON

-

Electric load switch: OFF
(Air conditioner, headlamp)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is started the headlamp will not be illuminated.

-

Steering wheel: Neutral (Straight-ahead position)

-

Vehicle speed: Stopped

-

Transmission: Warmed-up
For M/T models, drive vehicle for 10 minutes.

OPERATION PROCEDURE

With CONSULT-II

1. Perform EC-92, "Accelerator Pedal Released Position Learning"  See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Programming and Relearning/Accelerator Pedal Released Position Learning.

2. Perform EC-92, "Throttle Valve Closed Position Learning"  See: Powertrain Management/Computers and Control Systems/Testing and

Inspection/Programming and Relearning/Throttle Valve Closed Position Learning.

3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.

5. Select "IDLE AIR VOL LEARN" in "WORK SUPPORT" mode.

6. Touch "START" and wait 20 seconds.

Perform If Idle Is Out of Specification|Page 3661 > < Engine Controls - Engine Idle Speed 25RPM Too High|Page 3658